Since the early 1960s, the Hong Kong Telephone Company (HKTC)—the dominant firm in Hong Kong’s local telephone market—has undergone several regulatory reforms. The company has been subject to price control, rate-of-return regulation and price-cap regulation. This paper estimates the total factor productivity (TFP) growth of HKTC. The empirical results show that the estimated TFP growth of HKTC ...

AC losses in cables carrying dc as well as ac transport currents at different dc background fields up to 2T have been measured on three types of Nb,Sn subcables in a new test facility. In this facility it is possible to apply sinusoidal transverse ac fields up to dBldMTls and longitudinal ac fields up to Wdt-JOTls separately and simultaneously. The ac loss is measured with a calorimetric method...

The paper analyzes how social barriers to communication affect economy-wide productivity and factor accumulation. Using a dynamic model of an economy that includes a reproducible capital stock (physical or human) and effective labor, a negative relationship is shown to exist between social barriers to communication and total factor productivity (TFP), per capita consumption and reproducible cap...

We demonstrate terahertz THz pulse propagation on a cylindrical aluminum plate, with low loss and negligible dispersion via transverse-electric type whispering gallery WG modes. We observe an apparent superluminal effect where the group velocity is greater than c, and explain this phenomenon by means of a plane-wave description of the WG modes. The propagation loss is dominated by the diffracti...